audio-io fixed crash at audio_in_read() of another thread.
[platform/core/api/audio-io.git] / test / audio_io_test.c
index ad97bdd..ca89a73 100644 (file)
 #include <sound_manager.h>
 #include <audio_io.h>
 
-//#define _NEW_SOUND_MANAGER_API_
-#define _SESSION_SOUND_MANAGER_API_
-
 #ifndef M_PI
 #define M_PI  (3.14159265)
 #endif
 
 #define TABLE_SIZE   (200)
-typedef struct
-{
-    float sine[TABLE_SIZE];
-    int left_channel;
-    int right_channel;
+typedef struct {
+       float sine[TABLE_SIZE];
+       int left_channel;
+       int right_channel;
 } test_wav_t;
 test_wav_t test_wav;
 
@@ -42,678 +38,620 @@ static int ch_table[3] = { 0, AUDIO_CHANNEL_MONO, AUDIO_CHANNEL_STEREO };
 
 void play_file(char *file, int length, int ch)
 {
-    audio_out_h output;
-    FILE* fp = fopen (file, "r");
-    if (fp == NULL) {
-        printf ("fopen failed\n");
-        return;
-    }
-
-    char * buf = malloc (length);
-    if (buf == NULL) {
-        printf ("malloc failed\n");
-        fclose (fp);
-        return;
-    }
-
-    printf ("start to play [%s][%d][%d]\n", file, length, ch);
-    //audio_out_create(44100, ch_table[ch] ,AUDIO_SAMPLE_TYPE_S16_LE, SOUND_TYPE_MEDIA, &output);
-    audio_out_create_new(44100, ch_table[ch] ,AUDIO_SAMPLE_TYPE_S16_LE, &output);
-    if (fread (buf, 1, length, fp) != length) {
-        printf ("error!!!!\n");
-    }
-
-    audio_out_prepare(output);
-    audio_out_write(output, buf, length);
-    audio_out_unprepare(output);
-
-    audio_out_destroy (output);
-
-    fclose (fp);
-
-    printf ("play done\n");
+       audio_out_h output;
+       FILE *fp = fopen(file, "r");
+       if (fp == NULL) {
+               printf("fopen failed\n");
+               return;
+       }
+
+       char *buf = malloc(length);
+       if (buf == NULL) {
+               printf("malloc failed\n");
+               fclose(fp);
+               return;
+       }
+
+       printf("start to play [%s][%d][%d]\n", file, length, ch);
+       audio_out_create_new(44100, ch_table[ch], AUDIO_SAMPLE_TYPE_S16_LE, &output);
+       if (fread(buf, 1, length, fp) != length)
+               printf("error!!!!\n");
+
+       audio_out_prepare(output);
+       audio_out_write(output, buf, length);
+       audio_out_unprepare(output);
+
+       audio_out_destroy(output);
+
+       fclose(fp);
+
+       printf("play done\n");
 }
 
 #define DUMP_FILE "/root/test.raw"
 
-
 void play_file_sample(char *file, int frequency, int ch, int type)
 {
-    audio_out_h output;
-    int file_size = 0;
-    int read_bytes = 0;
-    int buffer_size = 0;
-    char * buf = NULL;
-
-    if (ch < 0 || ch > 2) {
-        ch = 0;
-    }
-
-    FILE* fp = fopen (file, "r");
-    if (fp == NULL) {
-        printf("open failed\n");
-        return;
-    }
-    /*Get the size*/
-    fseek(fp, 0, SEEK_END);
-    file_size = ftell(fp);
-    fseek(fp, 0, SEEK_SET);
-
-    printf ("start to play [%s] of size [%d] with [%d][%d][%d]\n", file, file_size, frequency, ch, type);
-    if (type) {
-        //audio_out_create(frequency, ch_table[ch] ,AUDIO_SAMPLE_TYPE_S16_LE, SOUND_TYPE_MEDIA, &output);
-        audio_out_create_new(frequency, ch_table[ch] ,AUDIO_SAMPLE_TYPE_S16_LE, &output);
-    } else {
-        //audio_out_create(frequency, ch_table[ch] ,AUDIO_SAMPLE_TYPE_U8, SOUND_TYPE_MEDIA, &output);
-        audio_out_create_new(frequency, ch_table[ch] ,AUDIO_SAMPLE_TYPE_U8, &output);
-    }
-    audio_out_prepare(output);
-    audio_out_get_buffer_size(output, &buffer_size);
-
-    buf = (char *) malloc(buffer_size);
-    if (buf == NULL) {
-        printf ("malloc failed\n");
-        audio_out_unprepare(output);
-        audio_out_destroy(output);
-        fclose (fp);
-        return;
-    }
-    //audio_out_prepare(output);
-
-    while (file_size > 0) {
-        read_bytes = fread (buf, 1, buffer_size, fp);
-        printf ("Read %d Requested - %d\n", read_bytes, buffer_size);
-        audio_out_write(output, buf, read_bytes);
-        file_size = file_size - read_bytes;
-    }
-
-    audio_out_unprepare(output);
-    audio_out_destroy (output);
-
-    free(buf);
-    fclose (fp);
-    printf ("play done\n");
+       audio_out_h output;
+       int file_size = 0;
+       int read_bytes = 0;
+       int buffer_size = 0;
+       char *buf = NULL;
+
+       if (ch < 0 || ch > 2)
+               ch = 0;
+
+       FILE *fp = fopen(file, "r");
+       if (fp == NULL) {
+               printf("open failed\n");
+               return;
+       }
+       /* Get the size */
+       fseek(fp, 0, SEEK_END);
+       file_size = ftell(fp);
+       fseek(fp, 0, SEEK_SET);
+
+       printf("start to play [%s] of size [%d] with [%d][%d][%d]\n", file, file_size, frequency, ch, type);
+       if (type)
+               audio_out_create_new(frequency, ch_table[ch], AUDIO_SAMPLE_TYPE_S16_LE, &output);
+       else
+               audio_out_create_new(frequency, ch_table[ch], AUDIO_SAMPLE_TYPE_U8, &output);
+
+       audio_out_prepare(output);
+       audio_out_get_buffer_size(output, &buffer_size);
+
+       buf = (char *)malloc(buffer_size);
+       if (buf == NULL) {
+               printf("malloc failed\n");
+               audio_out_unprepare(output);
+               audio_out_destroy(output);
+               fclose(fp);
+               return;
+       }
+
+       while (file_size > 0) {
+               read_bytes = fread(buf, 1, buffer_size, fp);
+               printf("Read %d Requested - %d\n", read_bytes, buffer_size);
+               audio_out_write(output, buf, read_bytes);
+               file_size = file_size - read_bytes;
+       }
+
+       audio_out_unprepare(output);
+       audio_out_destroy(output);
+
+       free(buf);
+       fclose(fp);
+       printf("play done\n");
 }
 
 int audio_io_test(int length, int num, int ch)
 {
-    int ret, size, i;
-    audio_in_h input;
-    if ((ret = audio_in_create(44100, ch_table[ch] ,AUDIO_SAMPLE_TYPE_S16_LE, &input)) == AUDIO_IO_ERROR_NONE) {
-        ret = audio_in_ignore_session(input);
-        if (ret != 0) {
-            printf ("ERROR, set session mix\n");
-            audio_in_destroy(input);
-            return 0;
-        }
-
-        ret = audio_in_prepare(input);
-        if (ret != 0) {
-            printf ("ERROR, prepare\n");
-            audio_in_destroy(input);
-            return 0;
-        }
-
-        FILE* fp = fopen (DUMP_FILE, "wb+");
-
-        if (fp == NULL) {
-            printf ("ERROR, file open failed\n");
-            audio_in_destroy(input);
-            return 0;
-        }
-
-        if ((ret = audio_in_get_buffer_size(input, &size)) == AUDIO_IO_ERROR_NONE) {
-            size = length;
-            char *buffer = alloca(size);
-
-            for (i=0; i<num; i++) {
-                printf ("### loop = %d ============== \n", i);
-                if ((ret = audio_in_read(input, (void*)buffer, size)) > AUDIO_IO_ERROR_NONE) {
-                    fwrite (buffer, size, sizeof(char), fp);
-                    printf ("PASS, size=%d, ret=%d\n", size, ret);
-                } else {
-                    printf ("FAIL, size=%d, ret=%d\n", size, ret);
-                }
-            }
-        }
-
-        fclose (fp);
-
-        audio_in_destroy(input);
-    }
-
-    play_file (DUMP_FILE, length*num, ch);
-
-    return 1;
+       int ret, size, i;
+       audio_in_h input;
+       if ((ret = audio_in_create(44100, ch_table[ch], AUDIO_SAMPLE_TYPE_S16_LE, &input)) == AUDIO_IO_ERROR_NONE) {
+               ret = audio_in_ignore_session(input);
+               if (ret != 0) {
+                       printf("ERROR, set session mix\n");
+                       audio_in_destroy(input);
+                       return 0;
+               }
+
+               ret = audio_in_prepare(input);
+               if (ret != 0) {
+                       printf("ERROR, prepare\n");
+                       audio_in_destroy(input);
+                       return 0;
+               }
+
+               FILE *fp = fopen(DUMP_FILE, "wb+");
+
+               if (fp == NULL) {
+                       printf("ERROR, file open failed\n");
+                       audio_in_destroy(input);
+                       return 0;
+               }
+
+               if ((ret = audio_in_get_buffer_size(input, &size)) == AUDIO_IO_ERROR_NONE) {
+                       size = length;
+                       char *buffer = alloca(size);
+
+                       for (i = 0; i < num; i++) {
+                               printf("### loop = %d ============== \n", i);
+                               if ((ret = audio_in_read(input, (void *)buffer, size)) > AUDIO_IO_ERROR_NONE) {
+                                       fwrite(buffer, size, sizeof(char), fp);
+                                       printf("PASS, size=%d, ret=%d\n", size, ret);
+                               } else {
+                                       printf("FAIL, size=%d, ret=%d\n", size, ret);
+                               }
+                       }
+               }
+
+               fclose(fp);
+
+               audio_in_unprepare(input);
+               audio_in_destroy(input);
+       }
+
+       play_file(DUMP_FILE, length * num, ch);
+
+       return 1;
 }
 
 int audio_io_loopback_in_test()
 {
-    int ret, size;
-    audio_in_h input;
-    FILE* fp = fopen ("/tmp/dump_test.raw", "wb+");
-
-    if (fp == NULL) {
-        printf("open failed \n");
-        return 0;
-    }
-
-    if ((ret = audio_in_create(16000, AUDIO_CHANNEL_MONO , AUDIO_SAMPLE_TYPE_S16_LE, &input)) == AUDIO_IO_ERROR_NONE) {
-        ret = audio_in_ignore_session(input);
-        if (ret != 0) {
-            printf ("ERROR, set session mix\n");
-            goto exit;
-        }
-
-        ret = audio_in_prepare(input);
-        if (ret != 0) {
-            printf ("ERROR, prepare\n");
-            goto exit;
-        }
-
-        ret = audio_in_get_buffer_size(input, &size);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_in_get_buffer_size failed.\n");
-            goto exit;
-        }
-
-        while (1) {
-            char *buffer = alloca(size);
-            if ((ret = audio_in_read(input, (void*)buffer, size)) > AUDIO_IO_ERROR_NONE) {
-                fwrite (buffer, size, sizeof(char), fp);
-                printf ("PASS, size=%d, ret=%d\n", size, ret);
-            } else {
-                printf ("FAIL, size=%d, ret=%d\n", size, ret);
-            }
-        }
-    }
-
-exit:
-    audio_in_destroy(input);
-
-    fclose (fp);
-
-    return ret;
+       int ret, size;
+       audio_in_h input;
+       FILE *fp = fopen("/tmp/dump_test.raw", "wb+");
+
+       if (fp == NULL) {
+               printf("open failed \n");
+               return 0;
+       }
+
+       if ((ret = audio_in_create(16000, AUDIO_CHANNEL_MONO, AUDIO_SAMPLE_TYPE_S16_LE, &input)) == AUDIO_IO_ERROR_NONE) {
+               ret = audio_in_ignore_session(input);
+               if (ret != 0) {
+                       printf("ERROR, set session mix\n");
+                       goto exit;
+               }
+
+               ret = audio_in_prepare(input);
+               if (ret != 0) {
+                       printf("ERROR, prepare\n");
+                       goto exit;
+               }
+
+               ret = audio_in_get_buffer_size(input, &size);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_in_get_buffer_size failed.\n");
+                       goto exit;
+               }
+
+               while (1) {
+                       char *buffer = alloca(size);
+                       if ((ret = audio_in_read(input, (void *)buffer, size)) > AUDIO_IO_ERROR_NONE) {
+                               fwrite(buffer, size, sizeof(char), fp);
+                               printf("PASS, size=%d, ret=%d\n", size, ret);
+                       } else {
+                               printf("FAIL, size=%d, ret=%d\n", size, ret);
+                       }
+               }
+       }
+
+ exit:
+       audio_in_destroy(input);
+
+       fclose(fp);
+
+       return ret;
 
 }
 
 int audio_io_loopback_test()
 {
-    int ret, size;
-    audio_in_h input;
-    audio_out_h output;
-    char *buffer = NULL;
-
-    ret = audio_in_create(16000, AUDIO_CHANNEL_MONO , AUDIO_SAMPLE_TYPE_S16_LE, &input);
-    if (ret != AUDIO_IO_ERROR_NONE) {
-        printf ("audio_in_create_ex failed. \n");
-        return 0;
-    }
-
-    //ret = audio_out_create(16000, AUDIO_CHANNEL_MONO , AUDIO_SAMPLE_TYPE_S16_LE, SOUND_TYPE_CALL, &output);
-    ret = audio_out_create_new(16000, AUDIO_CHANNEL_MONO , AUDIO_SAMPLE_TYPE_S16_LE, &output);
-    if (ret != AUDIO_IO_ERROR_NONE) {
-        printf ("audio_out_create failed. \n");
-        return 0;
-    }
-
-    ret = audio_in_prepare(input);
-    if (ret != 0) {
-        printf ("audio_in_prepare failed.\n");
-        audio_in_destroy(input);
-        return 0;
-    } else {
-        ret = audio_in_get_buffer_size(input, &size);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_in_get_buffer_size failed.\n");
-            return 0;
-        } else {
-            printf("size(%d)\n", size);
-            buffer = alloca(size);
-        }
-    }
-
-    ret = audio_out_prepare(output);
-    if (ret != 0) {
-        printf ("audio_out_prepare failed.\n");
-        audio_out_destroy(output);
-        return 0;
-    }
-
-    if (buffer == NULL) {
-        printf("buffer is null\n");
-        return 0;
-    }
-
-    while (1) {
-        ret = audio_in_read(input, (void*)buffer, size);
-        if (ret > AUDIO_IO_ERROR_NONE) {
-            ret = audio_out_write(output, buffer, size);
-            if (ret > AUDIO_IO_ERROR_NONE) {
-                printf("audio read/write success. buffer(%p), size(%d)\n", buffer, size);
-            } else {
-                printf("audio read success, write failed. buffer(%p), size(%d)\n", buffer, size);
-            }
-        } else
-            printf("audio read/write failed. buffer(%p), size(%d)\n", buffer, size);
-    }
+       int ret, size;
+       audio_in_h input;
+       audio_out_h output;
+       char *buffer = NULL;
+
+       ret = audio_in_create(16000, AUDIO_CHANNEL_MONO, AUDIO_SAMPLE_TYPE_S16_LE, &input);
+       if (ret != AUDIO_IO_ERROR_NONE) {
+               printf("audio_in_create_ex failed. \n");
+               return 0;
+       }
+       ret = audio_out_create_new(16000, AUDIO_CHANNEL_MONO, AUDIO_SAMPLE_TYPE_S16_LE, &output);
+       if (ret != AUDIO_IO_ERROR_NONE) {
+               printf("audio_out_create failed. \n");
+               return 0;
+       }
+
+       ret = audio_in_prepare(input);
+       if (ret != 0) {
+               printf("audio_in_prepare failed, err(0x%x)\n", ret);
+               audio_in_destroy(input);
+               return 0;
+       } else {
+               ret = audio_in_get_buffer_size(input, &size);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_in_get_buffer_size failed, err(0x%x)\n", ret);
+                       return 0;
+               } else {
+                       printf("size(%d)\n", size);
+                       buffer = alloca(size);
+               }
+       }
+
+       ret = audio_out_prepare(output);
+       if (ret != 0) {
+               printf("audio_out_prepare failed, err(0x%x)\n", ret);
+               audio_out_destroy(output);
+               return 0;
+       }
+
+       if (buffer == NULL) {
+               printf("buffer is null\n");
+               return 0;
+       }
+
+       while (1) {
+               ret = audio_in_read(input, (void *)buffer, size);
+               if (ret > AUDIO_IO_ERROR_NONE) {
+                       ret = audio_out_write(output, buffer, size);
+                       if (ret > AUDIO_IO_ERROR_NONE)
+                               printf("audio read/write success. buffer(%p), size(%d)\n", buffer, size);
+                       else
+                               printf("audio read success, write failed. buffer(%p), size(%d)\n", buffer, size);
+               } else
+                       printf("audio read/write failed. buffer(%p), size(%d)\n", buffer, size);
+       }
 
 }
 
 audio_in_h input;
 audio_out_h output;
 
-FILEfp_w = NULL;
+FILE *fp_w = NULL;
 
-#ifdef _NEW_SOUND_MANAGER_API_
 sound_stream_info_h g_stream_info_read_h = NULL;
 sound_stream_info_h g_stream_info_write_h = NULL;
 
-static void focus_callback_read (sound_stream_info_h stream_info, sound_stream_focus_change_reason_e reason_for_change, const char *additional_info, void *user_data) {
-    int ret = 0;
-    sound_stream_focus_state_e playback_focus_state;
-    sound_stream_focus_state_e recording_focus_state;
-    printf ("*** focus_callback_read is called, stream_info(%p) ***\n", stream_info);
-    printf (" - reason_for_change(%d), additional_info(%s), user_data(%p)\n", reason_for_change, additional_info, user_data);
-    ret = sound_manager_get_focus_state (stream_info, &playback_focus_state, &recording_focus_state);
-    if (!ret)
-        printf (" - focus_state(playback_focus:%d, recording_focus:%d)\n", playback_focus_state, recording_focus_state);
-    if (playback_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
-        printf (" -- PLAYBACK_FOCUS acquired\n");
-    }
-    if (recording_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
-        printf (" -- FOCUS_RECORDING acquired\n");
-    }
-    printf ("*** focus_callback_read is ended, stream_info(%p) ****\n", stream_info);
-    return;
-}
-
-static void focus_callback_write (sound_stream_info_h stream_info, sound_stream_focus_change_reason_e reason_for_change, const char *additional_info, void *user_data) {
-    int ret = 0;
-    sound_stream_focus_state_e playback_focus_state;
-    sound_stream_focus_state_e recording_focus_state;
-    printf ("*** focus_callback_write is called, stream_info(%p) ***\n", stream_info);
-    printf (" - reason_for_change(%d), additional_info(%s), user_data(%p)\n", reason_for_change, additional_info, user_data);
-    ret = sound_manager_get_focus_state (stream_info, &playback_focus_state, &recording_focus_state);
-    if (!ret)
-        printf (" - focus_state(playback_focus:%d, recording_focus:%d)\n", playback_focus_state, recording_focus_state);
-    if (playback_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
-        printf (" -- PLAYBACK_FOCUS acquired\n");
-    }
-    if (recording_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
-        printf (" -- FOCUS_RECORDING acquired\n");
-    }
-    printf ("*** focus_callback_write is ended, stream_info(%p) ****\n", stream_info);
-    return;
-}
-#endif
-
-static void interrupted_callback_read(audio_io_interrupted_code_e code, void *user_data) {
-    printf ("*** interrupted_callback_read is called, code(%d), user_data(%p) ***\n", code, user_data);
-}
-
-static void interrupted_callback_write(audio_io_interrupted_code_e code, void *user_data) {
-    printf ("*** interrupted_callback_write is called, code(%d), user_data(%p) ***\n", code, user_data);
+static void focus_callback(sound_stream_info_h stream_info, sound_stream_focus_change_reason_e reason_for_change, const char *additional_info, void *user_data)
+{
+       int ret = 0;
+       sound_stream_focus_state_e playback_focus_state;
+       sound_stream_focus_state_e recording_focus_state;
+       printf("*** focus_callback_read is called, stream_info(%p, read(%p)/write(%p)) ***\n", stream_info, g_stream_info_read_h, g_stream_info_write_h);
+       printf(" - reason_for_change(%d), additional_info(%s), user_data(%p)\n", reason_for_change, additional_info, user_data);
+       ret = sound_manager_get_focus_state(stream_info, &playback_focus_state, &recording_focus_state);
+       if (!ret)
+               printf(" - focus_state(playback_focus:%d, recording_focus:%d)\n", playback_focus_state, recording_focus_state);
+
+       return;
 }
 
-static void _audio_io_stream_read_cb (audio_in_h handle, size_t nbytes, void *user_data)
+static void _audio_io_stream_read_cb(audio_in_h handle, size_t nbytes, void *user_data)
 {
-    const void *buffer = NULL;
-    unsigned int len = (unsigned int) nbytes;
-
-    //printf("_audio_io_stream_read_cb : handle=%p, nbytes=%d, user_data=%p\n", handle, nbytes, user_data);
-
-    if (len > 0) {
-        audio_in_peek (handle, &buffer, &len);
-        if (fp_w) {
-            fwrite(buffer, sizeof(char), len, fp_w);
-        }
-        audio_in_drop (handle);
-    }
+       const void *buffer = NULL;
+       unsigned int len = (unsigned int)nbytes;
+
+       if (len > 0) {
+               audio_in_peek(handle, &buffer, &len);
+               if (fp_w)
+                       fwrite(buffer, sizeof(char), len, fp_w);
+               audio_in_drop(handle);
+       }
 }
 
-static void _audio_io_stream_write_cb (audio_out_h handle, size_t nbytes, void *user_data)
+static void _audio_io_stream_write_cb(audio_out_h handle, size_t nbytes, void *user_data)
 {
-    short* buffer = NULL;
-    int ret = 0;
-    int i = 0;
-
-    //printf("_audio_io_stream_write_cb : handle=%p, nbytes=%d, user_data=%p\n", handle, nbytes, user_data);
-
-    if (nbytes > 0) {
-        buffer = (short *) malloc(nbytes);
-        if (buffer == NULL) {
-            printf ("malloc failed\n");
-            return;
-        }
-        memset (buffer, 0, nbytes);
-
-        for (i=0; i<nbytes/2; i+=2)
-        {
-            buffer[i]   = (short) 32768 * test_wav.sine[test_wav.left_channel];   /* left */
-            buffer[i+1] = (short) 32768 * test_wav.sine[test_wav.right_channel];  /* right */
-            test_wav.left_channel += 1;
-            if (test_wav.left_channel >= TABLE_SIZE) test_wav.left_channel -= TABLE_SIZE;
-            test_wav.right_channel += 3;
-            if (test_wav.right_channel >= TABLE_SIZE) test_wav.right_channel -= TABLE_SIZE;
-        }
-
-        ret = audio_out_write(handle, buffer, nbytes);
-        if (ret > AUDIO_IO_ERROR_NONE) {
-            //printf("audio write success. buffer(%p), nbytes(%d)\n", buffer, nbytes);
-        }
-
-        free (buffer);
-    }
+       short *buffer = NULL;
+       int i = 0;
+
+       if (nbytes > 0) {
+               buffer = (short *)malloc(nbytes);
+               if (buffer == NULL) {
+                       printf("malloc failed\n");
+                       return;
+               }
+               memset(buffer, 0, nbytes);
+
+               for (i = 0; i < nbytes / 2; i += 2) {
+                       buffer[i] = (short)32768 *test_wav.sine[test_wav.left_channel]; /* left */
+                       buffer[i + 1] = (short)32768 *test_wav.sine[test_wav.right_channel];    /* right */
+                       test_wav.left_channel += 1;
+                       if (test_wav.left_channel >= TABLE_SIZE)
+                               test_wav.left_channel -= TABLE_SIZE;
+                       test_wav.right_channel += 3;
+                       if (test_wav.right_channel >= TABLE_SIZE)
+                               test_wav.right_channel -= TABLE_SIZE;
+               }
+
+               audio_out_write(handle, buffer, nbytes);
+
+               free(buffer);
+       }
 }
 
-static void _audio_in_state_cb (audio_in_h handle, audio_io_state_e previous, audio_io_state_e current, bool by_policy, void *user_data)
+static void _audio_in_state_cb(audio_in_h handle, audio_io_state_e previous, audio_io_state_e current, bool by_policy, void *user_data)
 {
-    printf(">>> _audio_in_state_cb() : handle(%p), current(%d), previous(%d), by_policy(%d), user_data(%p)\n", handle, current, previous, by_policy, user_data);
+       printf(">>> _audio_in_state_cb() : handle(%p), current(%d), previous(%d), by_policy(%d), user_data(%p)\n", handle, current, previous, by_policy, user_data);
 }
 
-static void _audio_out_state_cb (audio_in_h handle, audio_io_state_e previous, audio_io_state_e current, bool by_policy, void *user_data)
+static void _audio_out_state_cb(audio_in_h handle, audio_io_state_e previous, audio_io_state_e current, bool by_policy, void *user_data)
 {
-    printf(">>> _audio_out_state_cb() : handle(%p), current(%d), previous(%d), by_policy(%d), user_data(%p)\n", handle, current, previous, by_policy, user_data);
+       printf(">>> _audio_out_state_cb() : handle(%p), current(%d), previous(%d), by_policy(%d), user_data(%p)\n", handle, current, previous, by_policy, user_data);
 }
 
-int _convert_cmd_and_run(char cmd, int mode) {
-    int ret = 0;
-    switch (cmd) {
-        case 'P':
-            if (mode & 0x01)  ret = audio_out_prepare(output);
-            if (mode & 0x02)  ret = audio_in_prepare(input);
-            break;
-        case 'u':
-            if (mode & 0x01)  ret = audio_out_unprepare(output);
-            if (mode & 0x02)  ret = audio_in_unprepare(input);
-            break;
-        case 'p':
-            if (mode & 0x01)  ret = audio_out_pause(output);
-            if (mode & 0x02)  ret = audio_in_pause(input);
-            break;
-        case 'r':
-            if (mode & 0x01)  ret = audio_out_resume(output);
-            if (mode & 0x02)  ret = audio_in_resume(input);
-            break;
-        case 'd':
-            if (mode & 0x01)  ret = audio_out_drain(output);
-            //if (mode & 0x02)  ret = audio_in_drain(input);
-            break;
-        case 'f':
-            if (mode & 0x01)  ret = audio_out_flush(output);
-            if (mode & 0x02)  ret = audio_in_flush(input);
-            break;
-        case 'i':
-#ifdef _NEW_SOUND_MANAGER_API_
-            ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback_write, NULL, &g_stream_info_write_h);
-            if (ret) {
-                printf ("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
-            }
-#endif
-#ifdef _SESSION_SOUND_MANAGER_API_
-            ret = sound_manager_set_session_type(SOUND_SESSION_TYPE_MEDIA);
-            if (ret) {
-                printf ("fail to sound_manager_set_session_type(), ret(0x%x)\n", ret);
-            }
-            ret = sound_manager_set_media_session_option (SOUND_SESSION_OPTION_PAUSE_OTHERS_WHEN_START, SOUND_SESSION_OPTION_INTERRUPTIBLE_DURING_PLAY);
-            if (ret) {
-                printf ("fail to sound_manager_set_media_session_option(), ret(0x%x)\n", ret);
-            }
-#endif
-            break;
-        case 'q':  /* quit */
-            ret = 1;
-            break;
-        default:
-            ret = 1;
-            break;
-    }
-    return ret;
+int _convert_cmd_and_run(char cmd, int mode)
+{
+       int ret = 0;
+       switch (cmd) {
+       case 'P':
+               if (mode & 0x01)
+                       ret = audio_out_prepare(output);
+               if (mode & 0x02)
+                       ret = audio_in_prepare(input);
+               break;
+       case 'u':
+               if (mode & 0x01)
+                       ret = audio_out_unprepare(output);
+               if (mode & 0x02)
+                       ret = audio_in_unprepare(input);
+               break;
+       case 'p':
+               if (mode & 0x01)
+                       ret = audio_out_pause(output);
+               if (mode & 0x02)
+                       ret = audio_in_pause(input);
+               break;
+       case 'r':
+               if (mode & 0x01)
+                       ret = audio_out_resume(output);
+               if (mode & 0x02)
+                       ret = audio_in_resume(input);
+               break;
+       case 'd':
+               if (mode & 0x01)
+                       ret = audio_out_drain(output);
+               break;
+       case 'f':
+               if (mode & 0x01)
+                       ret = audio_out_flush(output);
+               if (mode & 0x02)
+                       ret = audio_in_flush(input);
+               break;
+       case 'i':
+               ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback, NULL, &g_stream_info_write_h);
+               if (ret)
+                       printf("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
+               break;
+       case 'q':                                       /* quit */
+               ret = 1;
+               break;
+       default:
+               ret = 1;
+               break;
+       }
+       return ret;
 }
 
 int audio_io_async_test(int mode)
 {
-    int ret, size;
-    char *buffer = NULL;
-    int i=0;
-
-    char cmd = 0;
-    int cmd_ret;
-
-    int write_mode = (mode & 0x01);
-    int read_mode = (mode & 0x02);
-
-    if ((write_mode == 0) && (read_mode == 0)) {
-        printf ("not vaild mode.\n");
-        return 0;
-    }
-
-    if (read_mode) {
-
-#ifdef _SESSION_SOUND_MANAGER_API_
-        printf ("set session for capture.\n");
-
-        ret = sound_manager_set_session_type(SOUND_SESSION_TYPE_MEDIA);
-        if (ret) {
-            printf ("fail to sound_manager_set_session_type(), ret(0x%x)\n", ret);
-        }
-
-        ret = sound_manager_set_media_session_option (SOUND_SESSION_OPTION_PAUSE_OTHERS_WHEN_START, SOUND_SESSION_OPTION_INTERRUPTIBLE_DURING_PLAY);
-        if (ret) {
-            printf ("fail to sound_manager_set_media_session_option(), ret(0x%x)\n", ret);
-        }
-#endif
-
-        printf ("audio_in_create\n");
-        ret = audio_in_create(44100, AUDIO_CHANNEL_STEREO , AUDIO_SAMPLE_TYPE_S16_LE, &input);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_in_create_ex failed. \n");
-            return 0;
-        }
-        printf ("audio_in_create success!!! [%p]\n", input);
-
-        ret = audio_in_set_stream_cb(input, _audio_io_stream_read_cb, NULL);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_in_set_stream_cb failed. \n");
-            return 0;
-        }
-        printf ("audio_in_set_stream_cb success!!! [%p]\n", input);
-
-        ret = audio_in_set_state_changed_cb(input, _audio_in_state_cb, NULL);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_out_set_state_changed_cb failed. \n");
-            return 0;
-        }
-        printf ("audio_out_set_state_changed_cb success!!! [%p]\n", input);
-
-        fp_w = fopen( "/tmp/pcm_w.raw", "w");
-
-#ifdef _NEW_SOUND_MANAGER_API_
-        //set stream type as SOUND_STREAM_TYPE_MEDIA
-        ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback_read, NULL, &g_stream_info_read_h);
-        if (ret) {
-            printf ("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
-        }
-        ret = audio_in_set_stream_info(input, g_stream_info_read_h);
-#endif
-
-        ret = audio_in_set_interrupted_cb(input, interrupted_callback_read, NULL);
-    }
-
-    if (write_mode) {
-        printf ("before audio_out_create\n");
-        getchar();
-
-#ifdef _SESSION_SOUND_MANAGER_API_
-        printf ("set session for playback.\n");
-
-        ret = sound_manager_set_session_type(SOUND_SESSION_TYPE_MEDIA);
-        if (ret) {
-            printf ("fail to sound_manager_set_session_type(), ret(0x%x)\n", ret);
-        }
-
-        ret = sound_manager_set_media_session_option (SOUND_SESSION_OPTION_PAUSE_OTHERS_WHEN_START, SOUND_SESSION_OPTION_INTERRUPTIBLE_DURING_PLAY);
-        if (ret) {
-            printf ("fail to sound_manager_set_media_session_option(), ret(0x%x)\n", ret);
-        }
-#endif
-
-        printf ("audio_out_create\n");
-        //ret = audio_out_create(44100, AUDIO_CHANNEL_STEREO , AUDIO_SAMPLE_TYPE_S16_LE, SOUND_TYPE_MEDIA, &output);
-        ret = audio_out_create_new(44100, AUDIO_CHANNEL_STEREO , AUDIO_SAMPLE_TYPE_S16_LE, &output);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_out_create failed. \n");
-            return 0;
-        }
-        printf ("audio_out_create success!!! [%p]\n", output);
-
-        ret = audio_out_set_stream_cb(output, _audio_io_stream_write_cb, NULL);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_out_set_stream_cb failed. \n");
-            return 0;
-        }
-        printf ("audio_out_set_stream_cb success!!! [%p]\n", output);
-
-        ret = audio_out_set_state_changed_cb(output, _audio_out_state_cb, NULL);
-        if (ret != AUDIO_IO_ERROR_NONE) {
-            printf ("audio_out_set_state_changed_cb failed. \n");
-            return 0;
-        }
-        printf ("audio_out_set_state_changed_cb success!!! [%p]\n", output);
-
-#ifdef _NEW_SOUND_MANAGER_API_
-        //set stream type as SOUND_STREAM_TYPE_MEDIA
-        ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback_write, NULL, &g_stream_info_write_h);
-        if (ret) {
-            printf ("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
-        }
-        ret = audio_out_set_stream_info(output, g_stream_info_write_h);
-#endif
-
-        ret = audio_out_set_interrupted_cb(output, interrupted_callback_write, NULL);
-
-        //generate wave data
-        for (i=0; i<TABLE_SIZE; i++) {
-            test_wav.sine[i] = 0.9 * (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
-        }
-        test_wav.left_channel = test_wav.right_channel = 0;
-    }
-
-    if (read_mode) {
-        printf ("before audio_in_prepare\n");
-        getchar();
-        printf ("audio_in_prepare\n");
-        ret = audio_in_prepare(input);
-        if (ret != 0) {
-            printf ("audio_in_prepare failed.\n");
-            audio_in_destroy(input);
-            return 0;
-        } else {
-            ret = audio_in_get_buffer_size(input, &size);
-            if (ret != AUDIO_IO_ERROR_NONE) {
-                printf ("audio_in_get_buffer_size failed.\n");
-                return 0;
-            } else {
-                printf("size(%d)\n", size);
-                buffer = alloca(size);
-            }
-        }
-
-        if (buffer == NULL) {
-            printf("buffer is null\n");
-            return 0;
-        }
-    }
-
-    if (write_mode) {
-        printf ("before audio_out_prepare\n");
-        getchar();
-        printf ("audio_out_prepare\n");
-        ret = audio_out_prepare(output);
-        if (ret != 0) {
-            printf ("audio_out_prepare failed.\n");
-            audio_out_destroy(output);
-            return 0;
-        }
-    }
-
-    do {
-        printf ("command(q:quit) : ");
-        cmd = (char) getchar();
-        if (cmd != '\n')  getchar();
-        cmd_ret = _convert_cmd_and_run(cmd, mode);
-        printf ("  - result code : %d\n", cmd_ret);
-    } while (cmd != 'q');
-
-    //printf ("loop start\n");
-    //for (i=0; i<10; i++) {
-    //    printf ("-------- %d -------\n",i);
-    //    usleep (1000000);
-    //}
-
-    //getchar();
-
-    if (read_mode) {
-        printf ("audio_in_unprepare\n");
-        audio_in_unprepare(input);
-        printf ("audio_in_destroy\n");
-        audio_in_destroy(input);
-
-        fclose(fp_w);
-        fp_w = NULL;
-
-#ifdef _NEW_SOUND_MANAGER_API_
-        ret = sound_manager_destroy_stream_information(g_stream_info_read_h);
-        if (ret) {
-            printf ("fail to sound_manager_destroy_stream_information(), ret(0x%x)\n", ret);
-        } else {
-            g_stream_info_read_h = NULL;
-        }
-#endif
-    }
-
-    //getchar();
-
-    if (write_mode) {
-        printf ("audio_out_unprepare\n");
-        audio_out_unprepare(output);
-        printf ("audio_out_destroy\n");
-        audio_out_destroy(output);
-
-#ifdef _NEW_SOUND_MANAGER_API_
-        ret = sound_manager_destroy_stream_information(g_stream_info_write_h);
-        if (ret) {
-            printf ("fail to sound_manager_destroy_stream_information(), ret(0x%x)\n", ret);
-        } else {
-            g_stream_info_write_h = NULL;
-        }
-#endif
-    }
-
-    return 0;
+       int ret, size;
+       char *buffer = NULL;
+       int i = 0;
+
+       char cmd = 0;
+       int cmd_ret;
+
+       int write_mode = (mode & 0x01);
+       int read_mode = (mode & 0x02);
+
+       sound_stream_focus_state_e playback_focus_state;
+       sound_stream_focus_state_e recording_focus_state;
+
+       if ((write_mode == 0) && (read_mode == 0)) {
+               printf("not vaild mode.\n");
+               return 0;
+       }
+
+       if (read_mode) {
+
+               printf("audio_in_create\n");
+               ret = audio_in_create(44100, AUDIO_CHANNEL_STEREO, AUDIO_SAMPLE_TYPE_S16_LE, &input);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_in_create_ex failed. \n");
+                       return 0;
+               }
+               printf("audio_in_create success!!! [%p]\n", input);
+
+               ret = audio_in_set_stream_cb(input, _audio_io_stream_read_cb, NULL);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_in_set_stream_cb failed. \n");
+                       goto EXIT;
+               }
+               printf("audio_in_set_stream_cb success!!! [%p]\n", input);
+
+               ret = audio_in_set_state_changed_cb(input, _audio_in_state_cb, NULL);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_out_set_state_changed_cb failed. \n");
+                       goto EXIT;
+               }
+               printf("audio_out_set_state_changed_cb success!!! [%p]\n", input);
+
+               ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback, NULL, &g_stream_info_read_h);
+               if (ret) {
+                       printf("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
+                       goto EXIT;
+               }
+               ret = audio_in_set_stream_info(input, g_stream_info_read_h);
+               if (ret)
+                       printf("fail to audio_in_set_stream_info(), ret(0x%x)\n", ret);
+
+               ret = sound_manager_acquire_focus(g_stream_info_read_h, SOUND_STREAM_FOCUS_FOR_RECORDING, NULL);
+               if (ret) {
+                       printf("fail to sound_manager_acquire_focus() for RECORDING, ret(0x%x)\n", ret);
+                       goto EXIT;
+               }
+
+               fp_w = fopen("/tmp/pcm_w.raw", "w");
+       }
+
+       if (write_mode) {
+               printf("before audio_out_create\n");
+               getchar();
+
+               printf("audio_out_create\n");
+               ret = audio_out_create_new(44100, AUDIO_CHANNEL_STEREO, AUDIO_SAMPLE_TYPE_S16_LE, &output);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_out_create failed. \n");
+                       goto EXIT;
+               }
+               printf("audio_out_create success!!! [%p]\n", output);
+
+               ret = audio_out_set_stream_cb(output, _audio_io_stream_write_cb, NULL);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_out_set_stream_cb failed. \n");
+                       goto EXIT;
+               }
+               printf("audio_out_set_stream_cb success!!! [%p]\n", output);
+
+               ret = audio_out_set_state_changed_cb(output, _audio_out_state_cb, NULL);
+               if (ret != AUDIO_IO_ERROR_NONE) {
+                       printf("audio_out_set_state_changed_cb failed. \n");
+                       goto EXIT;
+               }
+               printf("audio_out_set_state_changed_cb success!!! [%p]\n", output);
+
+               ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback, NULL, &g_stream_info_write_h);
+               if (ret) {
+                       printf("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
+                       goto EXIT;
+               }
+               ret = audio_out_set_stream_info(output, g_stream_info_write_h);
+               if (ret)
+                       printf("fail to audio_out_set_stream_info(), ret(0x%x)\n", ret);
+
+               ret = sound_manager_acquire_focus(g_stream_info_write_h, SOUND_STREAM_FOCUS_FOR_PLAYBACK, NULL);
+               if (ret) {
+                       printf("fail to sound_manager_acquire_focus() for PLAYBACK, ret(0x%x)\n", ret);
+                       goto EXIT;
+               }
+
+               /* generate wave data */
+               for (i = 0; i < TABLE_SIZE; i++)
+                       test_wav.sine[i] = 0.9 * (float)sin(((double)i / (double)TABLE_SIZE) * M_PI * 2.);
+               test_wav.left_channel = test_wav.right_channel = 0;
+       }
+
+       if (read_mode) {
+               printf("before audio_in_prepare\n");
+               getchar();
+               printf("audio_in_prepare\n");
+               ret = audio_in_prepare(input);
+               if (ret != 0) {
+                       printf("audio_in_prepare failed, err(0x%x)\n", ret);
+                       audio_in_destroy(input);
+                       goto EXIT;
+               } else {
+                       ret = audio_in_get_buffer_size(input, &size);
+                       if (ret != AUDIO_IO_ERROR_NONE) {
+                               printf("audio_in_get_buffer_size failed, err(0x%x)\n", ret);
+                               goto EXIT;
+                       } else {
+                               printf("size(%d)\n", size);
+                               buffer = alloca(size);
+                       }
+               }
+
+               if (buffer == NULL) {
+                       printf("buffer is null\n");
+                       goto EXIT;
+               }
+       }
+
+       if (write_mode) {
+               printf("before audio_out_prepare\n");
+               getchar();
+               printf("audio_out_prepare\n");
+               ret = audio_out_prepare(output);
+               if (ret != 0) {
+                       printf("audio_out_prepare failed, err(0x%x)\n", ret);
+                       audio_out_destroy(output);
+                       goto EXIT;
+               }
+       }
+
+       do {
+               int gotchar;
+               printf("command(q:quit) : ");
+               gotchar = getchar();
+               if (gotchar == EOF)
+                       goto EXIT;
+               if (cmd != '\n')
+                       getchar();
+               cmd_ret = _convert_cmd_and_run(cmd, mode);
+               printf("  - result code : %d\n", cmd_ret);
+       } while (cmd != 'q');
+
+EXIT:
+       if (read_mode) {
+               if (input) {
+                       printf("audio_in_unprepare\n");
+                       audio_in_unprepare(input);
+                       printf("audio_in_destroy\n");
+                       audio_in_destroy(input);
+                       input = NULL;
+               }
+
+               if (fp_w) {
+                       fclose(fp_w);
+                       fp_w = NULL;
+               }
+
+               if (g_stream_info_read_h) {
+                       ret = sound_manager_get_focus_state(g_stream_info_read_h, NULL, &recording_focus_state);
+                       if (recording_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
+                               ret = sound_manager_release_focus(g_stream_info_read_h, SOUND_STREAM_FOCUS_FOR_RECORDING, NULL);
+                               if (ret)
+                                       printf("fail to sound_manager_release_focus() for recording, ret(0x%x)\n", ret);
+                       }
+                       ret = sound_manager_destroy_stream_information(g_stream_info_read_h);
+                       if (ret)
+                               printf("fail to sound_manager_destroy_stream_information(), ret(0x%x)\n", ret);
+                       g_stream_info_read_h = NULL;
+               }
+       }
+
+       if (write_mode) {
+               if (output) {
+                       printf("audio_out_unprepare\n");
+                       audio_out_unprepare(output);
+                       printf("audio_out_destroy\n");
+                       audio_out_destroy(output);
+               }
+
+               if (g_stream_info_write_h) {
+                       ret = sound_manager_get_focus_state(g_stream_info_write_h, &playback_focus_state, NULL);
+                       if (playback_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
+                               ret = sound_manager_release_focus(g_stream_info_write_h, SOUND_STREAM_FOCUS_FOR_PLAYBACK, NULL);
+                               if (ret)
+                                       printf("fail to sound_manager_release_focus() for playback, ret(0x%x)\n", ret);
+                       }
+                       ret = sound_manager_destroy_stream_information(g_stream_info_write_h);
+                       if (ret)
+                               printf("fail to sound_manager_destroy_stream_information(), ret(0x%x)\n", ret);
+                       g_stream_info_write_h = NULL;
+               }
+       }
+
+       return 0;
 }
 
-int main(int argc, char ** argv)
+int main(int argc, char **argv)
 {
-    if ( argc == 2 && !strcmp(argv[1],"call-forwarding-loop")) {
-        audio_io_loopback_test();
-    } else if ( argc == 2 && !strcmp(argv[1],"call-forwarding-in")) {
-        audio_io_loopback_in_test();
-    } else if ( argc == 3 && !strcmp(argv[1],"async")) {
-        audio_io_async_test(atoi(argv[2]));
-    } else if (argc == 4) {
-        printf ("run with [%s][%s][%s]\n", argv[1],argv[2],argv[3]);
-        audio_io_test(atoi (argv[1]), atoi (argv[2]), atoi(argv[3]));
-    } else if (argc == 6) {
-        play_file_sample(argv[2], atoi(argv[3]), atoi(argv[4]), atoi(argv[5]));
-    } else {
-        printf ("1. usage : audio_io_test call-forwarding-loop\n");
-        printf ("2. usage : audio_io_test call-forwarding-in\n");
-        printf ("3. usage : audio_io_test [length to read] [number of iteration] [channels]\n");
-        printf ("4. usage : audio_io_test async [write(1) | read(2)]\n");
-        printf ("5. Uasge : audio_io_test play [filename] [sample rate] [channels] [type(0:U8)]\n");
-    }
-    return 0;
+       if (argc == 2 && !strcmp(argv[1], "call-forwarding-loop")) {
+               audio_io_loopback_test();
+       } else if (argc == 2 && !strcmp(argv[1], "call-forwarding-in")) {
+               audio_io_loopback_in_test();
+       } else if (argc == 3 && !strcmp(argv[1], "async")) {
+               audio_io_async_test(atoi(argv[2]));
+       } else if (argc == 4) {
+               int channel_idx = atoi(argv[3]);
+               if (channel_idx < 0 || channel_idx > 2) {
+                       printf("Invalid channel\n");
+                       return 0;
+               }
+               printf("run with [%s][%s][%s]\n", argv[1], argv[2], argv[3]);
+               audio_io_test(atoi(argv[1]), atoi(argv[2]), channel_idx);
+       } else if (argc == 6) {
+               play_file_sample(argv[2], atoi(argv[3]), atoi(argv[4]), atoi(argv[5]));
+       } else {
+               printf("1. usage : audio_io_test call-forwarding-loop\n");
+               printf("2. usage : audio_io_test call-forwarding-in\n");
+               printf("3. usage : audio_io_test [length to read] [number of iteration] [channels]\n");
+               printf("4. usage : audio_io_test async [write(1) | read(2)]\n");
+               printf("5. Uasge : audio_io_test play [filename] [sample rate] [channels] [type(0:U8)]\n");
+       }
+       return 0;
 }
-